I'm not sure genius is correlated with income, life expectancy, and even educational success, though. Never mind poor, miserable geniuses like Dostoevsky; even Alan Turing was considered a rather mediocre student (and was also pretty miserable and quite unsuccessful by many measures). I'm pretty sure there is some statistical correlation between IQ and genius, but the correlation is certainly not absolute. In other words, genius and very high IQ are certainly not the same thing.